on my repti-sun 10.0 box it says mark the date of when you purchased the bulb some place on it and replace bulb 1 year later. Does the bulb last 1 year from the date you first power it up or does that mean from the date you bought it whether it's used or not? I wonder cuz what if the bulb sits in the store for a few months without being used. Does that affect it? I figure I should still replace the bulb like every 6 mos like I would the repti-sun 5.0 even though Zoo-Med recommends 1 year. I know these are stupid questions and another thing if the bulb is made exactly the same way as the 5.0 how do they figure the bulb will travel another 10" into the enclosure? Anyone study this???
-----
kill 'em with kindness 



